Thanks for the feedback and your kind comments. The very small hollow sections were omitted as not being likely to be used in construction applications but I will look to add them in to a future release. As to other section types I will bear your suggestion in mind. I would though mention that unrestrained angles can present problems since they tend to twist when loaded.

I agree with the unrestrained angles comment except that in some circumstances it is safe to use them. The main applications where I use RSA is supporting facing stone or brick on an external wall where an I beam will not work for visibility reasons. In these applications the RSA bearings tend to be restrained by the weight of wall above. The torsion in the angle is could be specified by a moment offset similar to the load entry for columns.

Yes, of course there's no problem with using a stocky angle over a relatively short opening. The problem of adding something like this into the program is protecting those who don't know better from themselves - unfortunately we do have a few such users.

I don't see this being implemented in the near future, but once the missing parts of EuroBeam are complete I will look at it again.